Seiko Cal. 6638 - 471

The 6638-471 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6638 caliber with 20j jewels beating at 28,800 bph, it delivers a 57 hours power reserve. [seikata-wm-1fb20dcd3c05]

Also known as: Samurai, Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

38mm

Case Thickness

10.5mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

190m

Dial Color

Champagne

Jewels

20j

Frequency

28,800 bph

Power Reserve

57 hours

Year

1984

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